Astrophysics (Index)About


(European X-ray Observatory Satellite, HELOS)
(1980s European space X-ray telescope)

EXOSAT was a 1980s space X-ray telescope operated by the European Space Agency. (It has no relation to exosatellites.) It used lunar occultation observations to add precision to its observations, having been placed in a highly eccentric orbit to assist in this and to reach high enough that X-rays are unimpeded. It carried out a slew survey, with new discoveries designated by the prefix EXO.

Further reading:
EXOEXO 0706.1+5913slew survey
GPSGPS 1722-363galactic plane survey

Referenced by page:
European Space Agency (ESA)